Qashqai J11. Heater & Air conditioning Control System - part 19

BLOWER MOTOR

HAC-289

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace fan control amp. Refer to 

HAC-298, "Removal and Installation"

.

HAC-290

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

PTC HEATER

PTC HEATER

Component Function Check

INFOID:0000000010499429

1.

CHECK PTC HEATER OPERATION

1.

Start the engine.

2.

Operate blower motor.

3.

Operate temperature control dial to full hot position.

4.

Check for warm air at discharge air outlet.
NOTE:
• Engine must be cold.
• Battery must be charged.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-290, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010499430

1.

CHECK FUSE AND FUSIBLE LINK

1.

Turn ignition switch OFF.

2.

Check 30 A fuses (Nos. 35, 36 and 40).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse is blown. 

2.

CHECK PTC RELAY POWER SUPPLY

1.

Disconnect PTC relay connector.

2.

Turn ignition switch ON.

3.

Check voltage between PTC relay harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between PTC relay and fuse.

3.

CHECK PTC RELAY CONTROL SIGNAL CIRCUIT FOR OPEN

1.

Disconnect BCM connector. 

2.

Check continuity between PTC relay harness connector and BCM harness connector. 

Is the inspection result normal?

Relay

+

−

Voltage

PTC relay

Connector

Terminal

1

E27

2

Ground

Battery voltage

3

2

E28

2

3

3

E29

2

3

PTC relay

BCM

Continuity

Relay

Connector

Terminal

Connector

Terminal

1

E27

1

E60

172

Existed

2

E28

173

3

E29

170

PTC HEATER

HAC-291

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

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YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK PTC HEATER POWER SUPPLY CIRCUIT FOR OPEN

Check continuity between PTC relay harness connector and PTC heater harness connector. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK PTC HEATER GROUND CIRCUIT FOR OPEN

Check continuity between PTC heater harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK PTC RELAY

Check PTC relay. Refer to 

HAC-291, "Component Inspection (PTC Relay)"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace malfunctioning PTC relay.

7.

CHECK PTC HEATER

Check PTC heater. Refer to 

HAC-292, "Component Inspection (PTC Heater)"

.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-135, "Removal and Installation"

.

NO

>> Replace PTC heater. Refer to 

HAC-297, "Removal and Installation"

.

Component Inspection (PTC Relay)

INFOID:0000000010499431

1.

CHECK PTC RELAY

1.

Remove PTC relay.

2.

Check continuity between PTC relay terminals 3 and 5 when the
voltage is supplied between terminals 1 and 2.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning PTC relay.

PTC relay

PTC heater

Continuity

Relay

Connector

Terminal

Connector

Terminal

1

E27

5

E140

1

Existed

2

E28

3

3

E29

5

PTC heater

—

Continuity

Connector

Terminal

E140

2

Ground

Existed

4

Terminal

Voltage

Continuity

3

5

ON

Existed

OFF

Not existed

JSIIA1551ZZ

HAC-292

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

PTC HEATER

Component Inspection (PTC Heater)

INFOID:0000000010499432

1.

CHECK PTC HEATER

Check resistance between PTC heater terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace PTC heater. Refer to 

HAC-297, "Removal and Installation"

.

Terminal

Resistance (

Ω

)

1

2

Except 0 or 

∞

3

2 and 4

5

4

MANUAL HEATER SYSTEM

HAC-293

< SYMPTOM DIAGNOSIS >

[MANUAL HEATER ]

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SYMPTOM DIAGNOSIS

MANUAL HEATER SYSTEM

Symptom Table

INFOID:0000000010433477

NOTE:
Perform self-diagnoses with CONSULT before performing the symptom diagnosis. If any DTC is detected,
perform the corresponding diagnosis.

Symptom

Corresponding malfunction part

Check item/Reference

Air conditioning cannot be controlled.

• A/C amp. power supply or ground cir-

cuit

• A/C amp.

Check A/C amp. power supply and 
ground circuits.

HAC-284, "A/C AMP. : Diagnosis 
Procedure"

Discharge air temperature does not change.

Air mix door motor system installation 
condition

Check air mix door motor system is 
properly installed. Refer to 

HAC-

299, "Exploded View"

.

Air outlet does not change.

Mode door motor system installation 
condition

Check mode door motor system is 
properly installed. Refer to 

HAC-

299, "Exploded View"

.

Air inlet does not change.

Intake door motor system installation 
condition

Check intake door motor system is 
properly installed. Refer to 

HAC-

299, "Exploded View"

.

Blower motor does not operates or operation speed is 
not normal.

• Blower motor power supply circuit.
• A/C amp. ignition power supply sig-

nal circuit

• Fan control amp. power supply circuit
• Fan control amp. ground circuit
• Fan control amp. control signal circuit
• Blower  motor
• Fan control amp.
• A/C amp.

Check blower motor circuits.

HAC-285, "Diagnosis Procedure"

 

Blower motor operates at the maxi-
mum fan speed and fan speed can-
not be selected.

Blower motor 
can be switched 
to OFF.

• A/C amp. ignition power supply sig-

nal circuit

• Blower motor feedback signal circuit
• A/C amp.

Blower motor 
cannot be 
switched to 
OFF.

• Blower motor feedback signal circuit
• A/C amp. power supply circuit
• Fan control amp. power supply circuit
• Fan control amp. control signal circuit
• Fan control amp.
• A/C amp.

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

• Engine cooling system
• Heater hose
• Heater core
• Air leakage from each duct
• PTC heater system

HAC-294, "Diagnosis Procedure"

Noise is heard when the manual heater operates.

• Mixing any foreign object in blower 

motor

• Blower motor fan breakage
• Blower motor rotation inferiority

Check blower motor.

HAC-288, "Component Inspection 
(Blower Motor)"

HAC-294

< SYMPTOM DIAGNOSIS >

[MANUAL HEATER ]

INSUFFICIENT HEATING

INSUFFICIENT HEATING

Description

INFOID:0000000010433480

Symptom

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

Diagnosis Procedure

INFOID:0000000010433481

NOTE:
Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.

1.

CHECK COOLING SYSTEM

1.

Check engine coolant level and check for leakage. Refer to 

CO-12, "Inspection"

 (HRA2DDT engine mod-

els), 

CO-94, "Inspection"

 (K9K engine models) or 

CO-119, "Inspection"

 (R9M engine models).

2.

Check radiator cap. Refer to 

CO-16, "Inspection"

 (HRA2DDT engine models), 

CO-97, "Inspection"

 (K9K

engine models) or 

CO-123, "Inspection"

 (R9M engine models).

3.

Check water flow sounds of the engine coolant. Refer to 

CO-12, "Refilling"

 (HRA2DDT engine models),

CO-94, "Refilling"

 (K9K engine models) or 

CO-119, "Refilling"

 (R9M engine models).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refill engine coolant and repair or replace the parts depending on the inspection results.

2.

CHECK HEATER HOSE

Check installation of heater hose by visually or touching.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace parts depending on the inspection results.

3.

CHECK HEATER CORE

1.

Check temperature of inlet hose and outlet hose of heater core.

2.

Check that inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet
side.

CAUTION:

Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace heater core. Refer to 

HA-46, "HEATER CORE : Removal and Installation"

 (HRA2DDT

engine models) or 

HA-90, "HEATER CORE : Removal and Installation"

 (K9K and R9M engine

models).

4.

CHECK AIR LEAKAGE FROM EACH DUCT

Check duct and nozzle, etc. of the air conditioning system for air leakage.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace parts depending on the inspection results.

5.

CHECK PTC HEATER

Perform PTC heater diagnosis. Refer to 

HAC-290, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace parts depending on the inspection results.

HEATER CONTROL (A/C AMP.)

HAC-295

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

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REMOVAL AND INSTALLATION

HEATER CONTROL (A/C AMP.)

Exploded View

INFOID:0000000010433484

Refer to 

IP-12, "Exploded View"

.

Removal and Installation

INFOID:0000000010433485

REMOVAL

1.

Disengage fixing metal clips and pawls, and then remove A/C
control from instrument panel assembly according to numerical
order 1

→

2 indicated by arrows as shown in the figure.

2.

Disconnect harness connectors.

INSTALLATION

Install in the reverse order of removal.

: Pawl

: Metal clip

JMIIA3390ZZ

HAC-296

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

AMBIENT SENSOR

AMBIENT SENSOR

Removal and Installation

INFOID:0000000010433487

REMOVAL

1.

Remove front bumper fascia assembly. Refer to 

EXT-20, "Removal and Installation"

.

2.

Disconnect harness connector 

.

3.

Disengage fixing pawl, and then remove ambient sensor.

INSTALLATION

Install in the reverse order of removal.

: Pawl

JMIIA3393ZZ

PTC HEATER

HAC-297

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

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PTC HEATER

Removal and Installation

INFOID:0000000010500717

REMOVAL

1.

Remove instrument lower cover RH (RHD models) or glove box cover (LHD models). Refer to 

IP-13,

"Removal and Installation"

.

2.

Disconnect PTC heater connector.

3.

Remove fixing screws 

, and then remove PTC heater from A/

C unit assembly.

INSTALLATION

Install in the reverse order of removal.

JMIIA3532ZZ

HAC-298

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

FAN CONTROL AMPLIFIER

FAN CONTROL AMPLIFIER

Exploded View

INFOID:0000000010433494

Refer to 

HA-40, "Exploded View"

.

Removal and Installation

INFOID:0000000010433495

REMOVAL

1.

Remove instrument lower panel LH (LHD models) or glove box cover (RHD models). Refer to 

IP-13,

"Removal and Installation"

.

2.

Disconnect power transistor harness connector.

3.

Remove fixing screws 

, and then remove fan control amplifier.

INSTALLATION

Install in the reverse order of removal.

JMIIA3400ZZ

DOOR MOTOR

HAC-299

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

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DOOR MOTOR

Exploded View

INFOID:0000000010433496

LEFT SIDE

RIGHT SIDE

A/C unit assembly

Intake door lever

Intake door link

Intake door motor

Air mix door motor LH

JMIIA3368GB

HAC-300

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

DOOR MOTOR

AIR MIX DOOR MOTOR

AIR MIX DOOR MOTOR : Removal and Installation

INFOID:0000000010433497

REMOVAL

Air Mix Door Motor LH

1.

Set the temperature at 18

°

C (64

°

F).

CAUTION:

Always perform the above procedure when removing air mix door motor. Otherwise, air mix door
may interfere in A/C unit assembly may be damaged.

2.

Remove instrument lower panel LH (LHD models) or glove box cover (RHD models). Refer to 

IP-13,

"Removal and Installation"

.

3.

Remove foot duct LH. Refer to 

VTL-14, "FOOT DUCT : Removal and Installation"

.

4.

Disconnect air mix door motor harness connector.

5.

Remove fixing screws 

, and then remove air mix door motor

LH.

A/C unit assembly

Side ventilator door lever

Foot door link

Foot door link

Main link

Mode door link

Mode door motor

JMIIA3531ZZ

JMIIA3395ZZ

DOOR MOTOR

HAC-301

< REMOVAL AND INSTALLATION >

[MANUAL HEATER ]

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INSTALLATION

Note the following item, and then install in the reverse order of removal.

CAUTION:

After installing door motor, perform door motor starting position. Refer to 

HAC-272, "Work Proce-

dure"

.

INTAKE DOOR MOTOR

INTAKE DOOR MOTOR : Removal and Installation

INFOID:0000000010433498

REMOVAL

1.

Remove instrument lower panel LH (LHD models) or glove box cover (RHD models). Refer to 

IP-13,

"Removal and Installation"

.

2.

Disconnect intake door motor harness connector. 

3.

Remove fixing screws 

, and then remove intake door motor.

INSTALLATION

Install in the reverse order of removal.

MODE DOOR MOTOR

MODE DOOR MOTOR : Removal and Installation

INFOID:0000000010433499

REMOVAL

1.

Remove instrument lower panel RH (RHD models) or glove box cover (LHD models). Refer to 

IP-13,

"Removal and Installation"

.

2.

Remove foot duct RH. Refer to 

VTL-14, "FOOT DUCT : Removal and Installation"

.

3.

Disconnect mode door motor harness connector. 

4.

Remove fixing screws 

, mode door motor.

INSTALLATION

Note the following item, and then install in the reverse order of removal.

CAUTION:

After installing door motor, perform door motor starting position. Refer to 

HAC-272, "Work Proce-

dure"

.

JMIIA3394ZZ

JMIIA3396ZZ